Philips-MAS-55-Service-Manual电路原理图.pdf
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Philips-MAS-55-Service-Manual电路原理图.pdf
Version 1.1FWC5, MAS55© 3141 785 30351Mini Systemall versions Published by YT 0521 Service Audio Printed in The Netherlands Subject to modification© Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrievalsystem or transmitted, in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.Handling chip components . 1-1Leadfree and safety information . 1-2Technical specification . 2-1Service tools . 2-1Service measurement setup . 2-2Connections and controls . 3-1.3-3Disassembly diagram . 4-1Block diagram . 5-1Wiring diagram . 5-2Radio boardcircuit diagram . 6-1layout diagram . 6-2Cassette boardcircuit diagram . 7-1layout diagram . 7-2CD boardcircuit diagram. . 8-1layout diagram . 8-2Control and Main boardcircuit diagram (control board) . 9-1circuit diagram (main board) . 9-2layout diagram . 9-3Exploded view diagram . 10-1 .10-2Mechanical partslist . 10-2Electrical partslist .11-1TABLE OF CONTENTS1 - 1HANDLING CHIP COMPONENTS1 - 22 - 12 - 2SERVICE MEASUREMENTBandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BTuner FWUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50½Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Technology ST1700BFrame aeriale.g. 7122 707 89001Tuner AM (MW,LW)To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday«s cage.Use a bandpass filter (or at least a high pass filter with 250kHz) to eliminate hum (50Hz, 100Hz).RF Generator e.g. PM5326Ri=50½LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTCD RECORDERUse Audio Signal Disc SBC429 4822 397 30184(replaces test disc 3)Use Universal Test Cassette Fe SBC420 4822 397 30071LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTLF Generator e.g. PM5110Ri=50½3 - 1CONNECTION AND CONTROLS3 - 2CONNECTION AND CONTROLSxx3 - 3CONNECTION AND CONTROLSFor more information onoperation instruction please visit Philips Audio internet site : http:/www.audio.philips.comxx4 - 1DISASSEMBLY DIADRAMSA. Remove Back Cabinet Screws SP3x10 (2 pcs.) Screws SP3x25 (5 pcs.) Screws SP3x8 (5 pcs.)B. Remove Top Cabinet and Main PCB Assembly Screws SP3x10 Washer head (3 pcs.)xx5 - 1BLOCK DIADRAMS
